What to pack for Buenos Aires in January
- light, breathable clothing
- sun protection (hat, SPF 50)
- a compact umbrella or rain shell — rain is frequent
Humidity averages 67%; max daily wind around 26 km/h.
How January compares
Best months in Buenos Aires: February–May & September–December. See the full best time to visit Buenos Aires guide.
Buenos Aires in January: the details
In January, Buenos Aires sees average daytime highs of 28°C (83°F) and overnight lows of 21°C (69°F). Rainfall totals roughly 89 mm across 9.5 rainy days, and the sun shines about 11.9 hours per day with 14.1 hours of daylight mid-month. Relative humidity averages 67%.
In context: January is the warmest month of the year and the third-wettest in Buenos Aires. The sunniest month is December (12.4 h/day).
| Metric | January average |
|---|---|
| Daytime high | 28°C / 83°F |
| Overnight low | 21°C / 69°F |
| Rainfall | 89 mm over 9.5 rainy days |
| Sunshine | 11.9 h/day (14.1 h daylight) |
| Humidity | 67% |
| Travel score | 8.4 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Buenos Aires, Argentina (-34.61, -58.38) — see our methodology. Actual conditions vary year to year.
Not set on Buenos Aires? Browse the best places to visit in January ranked by travel score.
Frequently asked questions
How hot is Buenos Aires in January?
Daytime highs in Buenos Aires in January average 28°C (83°F); nights drop to about 21°C.
Does it rain in Buenos Aires in January?
Expect around 9.5 rainy days and 89 mm of rainfall in January.
Is January a good time to visit Buenos Aires?
January is a good month to visit Buenos Aires. Overall travel score: 8.4/10. The best months are February–May & September–December.
Also good in January, near Buenos Aires
Where should you go next month?
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